Semi-conductors with donor atoms and free electrons belong to the type________________?

Related Mcqs:

1. Many of the semi conductors are crystals of the type__________________?

   A. Face centred cubic
   B. Body centred cubic
   C. Simple cubic
   D. All of the above

2. To obtain a p-type semi-conductor Si Crystal must be doped with foreign atoms whose valency is_____________?

   A. 2
   B. 3
   C. 4
   D. 5

3. Materials in which valence electrons are tightly bound to their atoms at low temperature are called___________________?

   A. Semi conductor
   B. Super conductors
   C. Insulators
   D. Conductor

4. The electrons in conduction band are free to___________________?

   A. Transport vibrations
   B. Transport signals
   C. Transport charge
   D. Transport impulses

5. Acceptor and donor impurities donate______________?

   A. n-carriers only
   B. p-carriers only
   C. p-carriers and n-carriers respectively
   D. n-carriers and p-carriers respectively

6. Which one of the following is not a donor impurity ?

   A. antimony
   B. phosphorus
   C. aluminium
   D. arsenic

7. Which one of following band is completely filled in case of conductors ?

   A. Conduction band
   B. Fermi band
   C. Valence band
   D. Forbidden band

8. Electrons present in p-type material due to thermal pair generation are_____________?

   A. majority carriers
   B. minority carriers
   C. dual carriers
   D. blockers

9. Semi-conductor germanium and silicon are_________________?

   A. pentavalent
   B. trivalent
   C. divalent
   D. tetravalent

10. Forward current through a semi conductor diode circuit is due to____________?

    A. minority carriers
    B. majority carriers
    C. holes
    D. electron